Circuit Breakers

Cutler-Hammer / Eaton Circuit Breakers — In Stock, Supported, and Ready to Ship

Bay Power supplies Cutler-Hammer and Eaton circuit breakers for a wide range of commercial and industrial applications, supporting both current production and legacy equipment still widely used across the U.S. Many facilities—especially across the West Coast—still operate with installed Cutler-Hammer gear, and we specialize in helping you maintain, replace, or upgrade those systems without delays.

Eaton acquired Cutler-Hammer in the 1970s, and the Cutler-Hammer name continues to be used across many Eaton-branded products today. As a result, many breaker lines are functionally interchangeable or have direct Eaton equivalents, making it easier to source replacements even when original models are discontinued.

 

Common Cutler-Hammer / Eaton Breaker Lines We Support

We regularly supply and support the most widely used breaker families, including:

• Eaton Series C (FD, KD, LD, etc.) – Common molded case breakers used in panelboards and switchboards

• Eaton Magnum DS – Low voltage power circuit breakers used in switchgear applications

• Eaton Series NRX – Newer generation low voltage air circuit breakers

• Cutler-Hammer Westinghouse Legacy Lines – Including older MCCB and power breaker platforms still in service

Whether you’re matching an existing breaker, upgrading to a newer platform, or sourcing a compatible replacement, we help ensure you get the correct fit for your system.

 

Replacement, Interchangeability, and Legacy Support

Many Cutler-Hammer and Eaton breakers have direct cross-references or approved replacements within Eaton’s current product lines. In some cases, newer breakers can be retrofitted into existing gear, while in others, exact replacements or reconditioned units are the best option.

We help you navigate:

• Direct replacements vs. retrofit solutions

• Compatibility with existing panelboards and switchgear

• Obsolete and hard-to-find breaker models

• Trip unit and accessory matching

 

New, Surplus, Obsolete, and Reconditioned Solutions

Many Cutler Hammer breakers are still in service under Eaton, Westinghouse, and legacy electrical systems. Bay Power helps customers locate both current production and discontinued models that may be difficult to source through standard distribution channels.

 

In-House Testing and Repair Capabilities

• Breaker inspection and testing
• Primary injection testing
• Trip function testing
• Calibration verification
• Repair and refurbishment
• Documentation and test reports

 

Why Contractors and Maintenance Teams Choose Bay Power

• Large inventory of current and obsolete Cutler Hammer breakers
• Fast response times for urgent replacement needs
• In-house testing, repair, and refurbishment capabilities
• Technical support for part number identification and replacement options
• Nationwide shipping

 

Browse Our Cutler Hammer Circuit Breaker Inventory

Use the button below to browse available Cutler Hammer circuit breakers, or contact our team for help locating obsolete, surplus, and hard-to-find models.